Quick Answer
The answer is Azure Files. This is the correct choice because Azure Files offers fully managed cloud file shares that natively support the Network File System (NFS) protocol, allowing you to mount the share directly from your on-premises application with minimal code changes. Since your existing application already uses NFS for file storage, migrating to Azure Files preserves the same file system semantics and NFS client calls, eliminating the need to rewrite storage access logic. On the Microsoft Azure Developer Associate AZ-204 exam, this scenario tests your understanding of selecting the right storage service based on protocol compatibility and code minimization—a common trap is choosing Azure Blob Storage, which uses REST APIs and would require significant code refactoring. Remember the memory tip: “NFS needs Files, not Blobs” to quickly recall that NFS protocol support is exclusive to Azure Files among the core storage services.
This AZ-204 practice question tests your understanding of develop for azure storage. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You are migrating an on-premises application to Azure. The application uses a network file share (NFS) to store files. You need to minimize code changes. Which Azure storage service should you use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Azure Files
Fully managed file share with NFS support.
Azure Disk Storage
Why wrong: Block storage for VMs.
Azure Blob Storage
Why wrong: Object storage, not file share.
Azure Queue Storage
Why wrong: Messaging service, not file storage.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure Files
Azure Files provides fully managed file shares in the cloud that support the Server Message Block (SMB) protocol and the Network File System (NFS) protocol. Since your on-premises application already uses an NFS share, migrating to Azure Files with NFS support allows you to mount the share directly with minimal code changes, as the application can continue to use the same file system semantics and NFS client calls.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure Files
Why this is correct
Fully managed file share with NFS support.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Azure Disk Storage
Why it's wrong here
Block storage for VMs.
Azure Blob Storage
Why it's wrong here
Object storage, not file share.
Azure Queue Storage
Why it's wrong here
Messaging service, not file storage.
Common exam traps
The trap here is that candidates often confuse Azure Files with Azure Blob Storage, assuming both are 'file storage' in the cloud, but Blob Storage is object storage with a flat namespace and REST-based access, not a network file share that supports NFS or SMB protocols without significant code changes.
Detailed technical explanation
Azure Files supports NFS 4.1 protocol, which is the same version commonly used in Linux-based on-premises environments. When you create an NFS-enabled Azure file share, it is accessible over the internet or via Azure Private Link, and the share can be mounted using the standard `mount` command with options like `nfsvers=4.1`. A subtle behavior to note is that NFS shares in Azure Files currently require a premium storage account and do not support SMB access simultaneously, so you must choose the protocol that matches your application's existing NFS client.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Develop for Azure storage — study guide chapter
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FAQ
Develop for Azure storage — This question tests Develop for Azure storage — Read the scenario before looking for a memorised answer..
The correct answer is: Azure Files — Azure Files provides fully managed file shares in the cloud that support the Server Message Block (SMB) protocol and the Network File System (NFS) protocol. Since your on-premises application already uses an NFS share, migrating to Azure Files with NFS support allows you to mount the share directly with minimal code changes, as the application can continue to use the same file system semantics and NFS client calls.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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